Dumbbell rack



FIG. 1 is a perspective view of a dumbbell rack showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is an end view thereof, the opposite side being a mirror image; and,

FIG. 5 is a section view taken along line 5—5 of FIG. 2. 

The ornamental design for a dumbbell rack, as shown and described. 